Engine ignition timing control apparatus

Patent · Tue Sep 23 00:00:00 EDT 1986

OSTI ID:5116537

Iwata, T; Komurasaki, S; Ueda, A

An ignition timing control apparatus is described for an internal combustion engine having reference ignition timing comprising: a sensing means for sensing vibrations including knocks of the engine; knock signal deriving means for deriving knock signals from the output of the sensing means; a retard controlling voltage generator for determining from the knock signals derived by the knock signal deriving means an ignition timing correction magnitude for suppressing the occurrence of knocks; an ignition timing change-over determining means for determining whether or not the change-over of the reference ignition timing to a corrected ignition timing is necessary from the knock condition, associated with a fuel used for the engine, provided by the knock signal deriving means; an initializing means for initializing the output of the ignition timing change-over determining means corresponding to a predetermined retard angle whereby the ignition timing is initially set at the predetermined retard angle; and an ignition timing change-over means for changing over the reference ignition timing to an ignition timing reflecting a correction magnitude determined by the retard controlling voltage generator.

• Assignee: Mitsubishi Denki Kabushiki Kaisha, Tokyo
• Patent Number(s): US 4612901
• OSTI ID: 5116537
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AUTOMOTIVE FUELS
CONTROL
CONTROL SYSTEMS
CORRECTIONS
ELECTRIC GENERATORS
ELECTRONIC CIRCUITS
ENGINES
FUELS
HEAT ENGINES
IGNITION SYSTEMS
INCIDENCE ANGLE
INTERNAL COMBUSTION ENGINES
KNOCK CONTROL
MECHANICAL VIBRATIONS
TIMING CIRCUITS
VOLTAGE REGULATORS